502 Error when attempting to set avatar

LennyMcLennington commented 2 years ago

Background information

Dendrite version or git SHA: a47b12dc7d692e0ddd4aaa0801dafc9bb462aad9
Monolith or Polylith?: Monolith
SQLite3 or Postgres?: Posgres (I did psql --version and got psql (PostgreSQL) 14.1 (Debian 14.1-4), I think that is the postgres version)
Running in Docker?: No
go version: go version go1.17.5 linux/amd64
Client used (if applicable): app.element.io version 1.9.9 and SchildiChat Desktop version 1.9.7-sc.1

Description

What is the problem: When I attempt to set my avatar it hangs for around 30 seconds, gives a 502 error, and the avatar remains unchanged.
Who is affected: To my knowledge I only know of it happening with my account on my homeserver, I have asked someone else on my homeserver to check whether this issue also occurs for him and will update when I get a response.
How is this bug manifesting: I get an error in the Monolith.log file (shown below), and after this happens I get "Connectivity to the server has been lost" on the Element client no matter what I do (restarting Element does not help), and 502 errors on a lot of requests, and all this only gets fixed when I restart the homeserver manually. After restarting, I don't get any 502 errors or persistent connectivity errors like that until I attempt to set my avatar again.
When did this first appear: This happened the first time I attempted to set my avatar. Someone else on my home server had successfully set his avatar a while ago but I only tried to set it today and found this issue.

Steps to reproduce

Attempt to set an avatar

The avatar is not set, the request gets a 502 error and I get this line in the Monolith.log;

time="2022-01-24T00:41:19.758764169Z" level=error msg="QueryRoomsForUser failed" func=github.com/matrix-org/dendrite/clientapi/routing.SetAvatarURL file="github.com/matrix-org/dendrite/clientapi/routing/profile.go:147" error="GetRoomsByMembership: cannot map user ID to state key NID: context canceled" req.id=qxPUhlmXtLNC req.method=PUT req.path="/_matrix/client/r0/profile/@lenny:polymc.org/avatar_url" user_id="@lenny:polymc.org"

kegsay commented 2 years ago

context cancelled means the client gave up. Setting profile names / pictures scales with the number of rooms the account is joined to because 1 event must be sent for every room the account is joined to. How many rooms is this account joined to?

That being said, it doesn't even look like Dendrite gets that far as it seems to be stuck on QueryRoomsForUser - which is a roomserver thing.

LennyMcLennington commented 2 years ago

How many rooms is this account joined to?

It was joned to 8 rooms and 3 spaces, but now I have left two of the spaces (each of the two spaces only had one room, they were just for testing) so now it's in 1 space and 6 rooms and now I am able to set my avatar without any issue. It's something to do with one of those rooms that I left then, I guess. Is there some sort of admin API I could use to force join myself to those rooms to see which one it is or am I stuck outside of those rooms now that I've left them?

neilalexander commented 2 years ago

This shouldn't happen anymore now that the profile updates are sent asynchronously, but please reopen if this is still an issue in 0.8.1.

matrix-org / dendrite